1/*-
2 * Copyright (c) 2004 Nate Lawson (SDG)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
| 1/*-
2 * Copyright (c) 2004 Nate Lawson (SDG)
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <sys/cdefs.h>
|
39#include <dev/acpica/acpivar.h>
40#include <dev/fdc/fdcvar.h>
41
42static int fdc_acpi_probe(device_t dev);
43static int fdc_acpi_attach(device_t dev);
44static int fdc_acpi_probe_children(device_t bus, device_t dev,
45 void *fde);
46static ACPI_STATUS fdc_acpi_probe_child(ACPI_HANDLE h, device_t *dev,
47 int level, void *arg);
48
49/* Maximum number of child devices of a controller (4 floppy + 1 tape.) */
50#define ACPI_FDC_MAXDEVS 5
51
52/* Standard size of buffer returned by the _FDE method. */
53#define ACPI_FDC_FDE_LEN (ACPI_FDC_MAXDEVS * sizeof(uint32_t))
54
55/*
56 * Parameters for the tape drive (5th device). Some BIOS authors use this
57 * for all drives, not just the tape drive (e.g., ASUS K8V). This isn't
58 * grossly incompatible with the spec since it says the first four devices
59 * are simple booleans.
60 */
61#define ACPI_FD_UNKNOWN 0
62#define ACPI_FD_PRESENT 1
63#define ACPI_FD_NEVER_PRESENT 2
64
65/* Temporary buf length for evaluating _FDE and _FDI. */
66#define ACPI_FDC_BUFLEN 1024
67
68/* Context for walking FDC child devices. */
69struct fdc_walk_ctx {
70 uint32_t fd_present[ACPI_FDC_MAXDEVS];
71 int index;
72 device_t acpi_dev;
73 device_t dev;
74};
75
76static int
77fdc_acpi_probe(device_t dev)
78{
79 device_t bus;
80 static char *fdc_ids[] = { "PNP0700", "PNP0701", NULL };
81
82 bus = device_get_parent(dev);
83 if (ACPI_ID_PROBE(bus, dev, fdc_ids) == NULL)
84 return (ENXIO);
85
86 if (ACPI_SUCCESS(ACPI_EVALUATE_OBJECT(bus, dev, "_FDE", NULL, NULL)))
87 device_set_desc(dev, "floppy drive controller (FDE)");
88 else
89 device_set_desc(dev, "floppy drive controller");
90 return (0);
91}
92
93static int
94fdc_acpi_attach(device_t dev)
95{
96 struct fdc_data *sc;
97 ACPI_BUFFER buf;
98 device_t bus;
99 int error, fde_count, i;
100 ACPI_OBJECT *obj, *pkg;
101 ACPI_HANDLE h;
102 uint32_t fde[ACPI_FDC_MAXDEVS];
103
104 /* Get our softc and use the same accessor as ISA. */
105 sc = device_get_softc(dev);
106 sc->fdc_dev = dev;
107
108 /* Initialize variables and get a temporary buffer for _FDE. */
109 error = ENXIO;
110 h = acpi_get_handle(dev);
111 buf.Length = ACPI_FDC_BUFLEN;
112 buf.Pointer = malloc(buf.Length, M_TEMP, M_NOWAIT | M_ZERO);
113 if (buf.Pointer == NULL)
114 goto out;
115
116 /* Allocate resources the same as the ISA attachment. */
117 error = fdc_isa_alloc_resources(dev, sc);
118 if (error != 0)
119 goto out;
120
121 /* Call common attach code in fdc(4) first. */
122 error = fdc_attach(dev);
123 if (error != 0)
124 goto out;
125
126 /*
127 * Enumerate _FDE, which lists floppy drives that are present. If
128 * this fails, fall back to the ISA hints-based probe method.
129 */
130 bus = device_get_parent(dev);
131 if (ACPI_FAILURE(ACPI_EVALUATE_OBJECT(bus, dev, "_FDE", NULL, &buf))) {
132 error = ENXIO;
133 goto out_hintsprobe;
134 }
135
136 /* Parse the output of _FDE in various ways. */
137 obj = pkg = (ACPI_OBJECT *)buf.Pointer;
138 switch (obj->Type) {
139 case ACPI_TYPE_BUFFER:
140 /*
141 * The spec says _FDE should be a buffer of five 32-bit
142 * integers. In violation of the spec, some systems use
143 * five bytes instead.
144 */
145 switch (obj->Buffer.Length) {
146 case ACPI_FDC_FDE_LEN:
147 bcopy(obj->Buffer.Pointer, fde, ACPI_FDC_FDE_LEN);
148 break;
149 case ACPI_FDC_MAXDEVS:
150 for (i = 0; i < ACPI_FDC_MAXDEVS; i++)
151 fde[i] = ((uint8_t *)obj->Buffer.Pointer)[i];
152 break;
153 default:
154 device_printf(dev, "_FDE wrong length: %d\n",
155 obj->Buffer.Length);
156 error = ENXIO;
157 goto out_hintsprobe;
158 }
159 break;
160 case ACPI_TYPE_PACKAGE:
161 /*
162 * In violation of the spec, systems including the ASUS
163 * K8V return a package of five integers instead of a
164 * buffer of five 32-bit integers.
165 */
166 fde_count = min(ACPI_FDC_MAXDEVS, pkg->Package.Count);
167 for (i = 0; i < fde_count; i++) {
168 obj = &pkg->Package.Elements[i];
169 if (obj->Type == ACPI_TYPE_INTEGER)
170 fde[i] = (uint32_t)obj->Integer.Value;
171 }
172 break;
173 default:
174 device_printf(dev, "invalid _FDE type %d\n", obj->Type);
175 error = ENXIO;
176 goto out_hintsprobe;
177 }
178
179 /* Add fd child devices as specified. */
180 error = fdc_acpi_probe_children(bus, dev, fde);
181
182out_hintsprobe:
183 /*
184 * If there was a problem with the _FDE drive enumeration, fall
185 * back to the hints-based probe.
186 */
187 if (error)
188 error = fdc_hints_probe(dev);
189
190out:
191 if (buf.Pointer)
192 free(buf.Pointer, M_TEMP);
193 if (error != 0)
194 fdc_release_resources(sc);
195
196 return (error);
197}
198
199static int
200fdc_acpi_probe_children(device_t bus, device_t dev, void *fde)
201{
202 struct fdc_walk_ctx *ctx;
203 devclass_t fd_dc;
204 int i;
205
206 /* Setup the context and walk all child devices. */
207 ctx = malloc(sizeof(struct fdc_walk_ctx), M_TEMP, M_NOWAIT);
208 if (ctx == NULL) {
209 device_printf(dev, "no memory for walking children\n");
210 return (ENOMEM);
211 }
212 bcopy(fde, ctx->fd_present, sizeof(ctx->fd_present));
213 ctx->index = 0;
214 ctx->dev = dev;
215 ctx->acpi_dev = bus;
216 ACPI_SCAN_CHILDREN(ctx->acpi_dev, dev, 1, fdc_acpi_probe_child,
217 ctx);
218
219 /* Add any devices not represented by an AML Device handle/node. */
220 fd_dc = devclass_find("fd");
221 for (i = 0; i < ACPI_FDC_MAXDEVS; i++)
222 if (ctx->fd_present[i] == ACPI_FD_PRESENT &&
223 devclass_get_device(fd_dc, i) == NULL) {
224 if (fdc_add_child(dev, "fd", i) == NULL)
225 device_printf(dev, "fd add failed\n");
226 }
227 free(ctx, M_TEMP);
228
229 /* Attach any children found during the probe. */
230 return (bus_generic_attach(dev));
231}
232
233static ACPI_STATUS
234fdc_acpi_probe_child(ACPI_HANDLE h, device_t *dev, int level, void *arg)
235{
236 struct fdc_walk_ctx *ctx;
237 device_t child, old_child;
238 ACPI_BUFFER buf;
239 ACPI_OBJECT *pkg, *obj;
240 ACPI_STATUS status;
241
242 ctx = (struct fdc_walk_ctx *)arg;
243 buf.Pointer = NULL;
244
245 /*
246 * The first four ints are booleans that indicate whether fd0-3 are
247 * present or not. The last is for a tape device, which we don't
248 * bother supporting for now.
249 */
250 if (ctx->index > 3)
251 return (AE_OK);
252
253 /* This device is not present, move on to the next. */
254 if (ctx->fd_present[ctx->index] != ACPI_FD_PRESENT)
255 goto out;
256
257 /* Create a device for the child with the given index. */
258 child = fdc_add_child(ctx->dev, "fd", ctx->index);
259 if (child == NULL)
260 goto out;
261 old_child = *dev;
262 *dev = child;
263
264 /* Get temporary buffer for _FDI probe. */
265 buf.Length = ACPI_FDC_BUFLEN;
266 buf.Pointer = malloc(buf.Length, M_TEMP, M_NOWAIT | M_ZERO);
267 if (buf.Pointer == NULL)
268 goto out;
269
270 /*
271 * Evaluate _FDI to get drive type to pass to the child. We use the
272 * old child here since it has a valid ACPI_HANDLE since it is a
273 * child of acpi. A better way to implement this would be to make fdc
274 * support the ACPI handle ivar for its children.
275 */
276 status = ACPI_EVALUATE_OBJECT(ctx->acpi_dev, old_child, "_FDI", NULL,
277 &buf);
278 if (ACPI_FAILURE(status)) {
279 if (status != AE_NOT_FOUND)
280 device_printf(ctx->dev, "_FDI failed - %#x\n", status);
281 goto out;
282 }
283 pkg = (ACPI_OBJECT *)buf.Pointer;
284 if (!ACPI_PKG_VALID(pkg, 16)) {
285 device_printf(ctx->dev, "invalid _FDI package\n");
286 goto out;
287 }
288 obj = &pkg->Package.Elements[1];
289 if (obj == NULL || obj->Type != ACPI_TYPE_INTEGER) {
290 device_printf(ctx->dev, "invalid type object in _FDI\n");
291 goto out;
292 }
293 fdc_set_fdtype(child, obj->Integer.Value);
294
295out:
296 ctx->index++;
297 if (buf.Pointer)
298 free(buf.Pointer, M_TEMP);
299 return (AE_OK);
300}
301
302static device_method_t fdc_acpi_methods[] = {
303 /* Device interface */
304 DEVMETHOD(device_probe, fdc_acpi_probe),
305 DEVMETHOD(device_attach, fdc_acpi_attach),
306 DEVMETHOD(device_detach, fdc_detach),
307
308 /* Bus interface */
309 DEVMETHOD(bus_print_child, fdc_print_child),
310 DEVMETHOD(bus_read_ivar, fdc_read_ivar),
311 DEVMETHOD(bus_write_ivar, fdc_write_ivar),
312
313 {0, 0}
314};
315
316static driver_t fdc_acpi_driver = {
317 "fdc",
318 fdc_acpi_methods,
319 sizeof(struct fdc_data)
320};
321
322DRIVER_MODULE(fdc, acpi, fdc_acpi_driver, fdc_devclass, 0, 0);
| 39#include <dev/acpica/acpivar.h>
40#include <dev/fdc/fdcvar.h>
41
42static int fdc_acpi_probe(device_t dev);
43static int fdc_acpi_attach(device_t dev);
44static int fdc_acpi_probe_children(device_t bus, device_t dev,
45 void *fde);
46static ACPI_STATUS fdc_acpi_probe_child(ACPI_HANDLE h, device_t *dev,
47 int level, void *arg);
48
49/* Maximum number of child devices of a controller (4 floppy + 1 tape.) */
50#define ACPI_FDC_MAXDEVS 5
51
52/* Standard size of buffer returned by the _FDE method. */
53#define ACPI_FDC_FDE_LEN (ACPI_FDC_MAXDEVS * sizeof(uint32_t))
54
55/*
56 * Parameters for the tape drive (5th device). Some BIOS authors use this
57 * for all drives, not just the tape drive (e.g., ASUS K8V). This isn't
58 * grossly incompatible with the spec since it says the first four devices
59 * are simple booleans.
60 */
61#define ACPI_FD_UNKNOWN 0
62#define ACPI_FD_PRESENT 1
63#define ACPI_FD_NEVER_PRESENT 2
64
65/* Temporary buf length for evaluating _FDE and _FDI. */
66#define ACPI_FDC_BUFLEN 1024
67
68/* Context for walking FDC child devices. */
69struct fdc_walk_ctx {
70 uint32_t fd_present[ACPI_FDC_MAXDEVS];
71 int index;
72 device_t acpi_dev;
73 device_t dev;
74};
75
76static int
77fdc_acpi_probe(device_t dev)
78{
79 device_t bus;
80 static char *fdc_ids[] = { "PNP0700", "PNP0701", NULL };
81
82 bus = device_get_parent(dev);
83 if (ACPI_ID_PROBE(bus, dev, fdc_ids) == NULL)
84 return (ENXIO);
85
86 if (ACPI_SUCCESS(ACPI_EVALUATE_OBJECT(bus, dev, "_FDE", NULL, NULL)))
87 device_set_desc(dev, "floppy drive controller (FDE)");
88 else
89 device_set_desc(dev, "floppy drive controller");
90 return (0);
91}
92
93static int
94fdc_acpi_attach(device_t dev)
95{
96 struct fdc_data *sc;
97 ACPI_BUFFER buf;
98 device_t bus;
99 int error, fde_count, i;
100 ACPI_OBJECT *obj, *pkg;
101 ACPI_HANDLE h;
102 uint32_t fde[ACPI_FDC_MAXDEVS];
103
104 /* Get our softc and use the same accessor as ISA. */
105 sc = device_get_softc(dev);
106 sc->fdc_dev = dev;
107
108 /* Initialize variables and get a temporary buffer for _FDE. */
109 error = ENXIO;
110 h = acpi_get_handle(dev);
111 buf.Length = ACPI_FDC_BUFLEN;
112 buf.Pointer = malloc(buf.Length, M_TEMP, M_NOWAIT | M_ZERO);
113 if (buf.Pointer == NULL)
114 goto out;
115
116 /* Allocate resources the same as the ISA attachment. */
117 error = fdc_isa_alloc_resources(dev, sc);
118 if (error != 0)
119 goto out;
120
121 /* Call common attach code in fdc(4) first. */
122 error = fdc_attach(dev);
123 if (error != 0)
124 goto out;
125
126 /*
127 * Enumerate _FDE, which lists floppy drives that are present. If
128 * this fails, fall back to the ISA hints-based probe method.
129 */
130 bus = device_get_parent(dev);
131 if (ACPI_FAILURE(ACPI_EVALUATE_OBJECT(bus, dev, "_FDE", NULL, &buf))) {
132 error = ENXIO;
133 goto out_hintsprobe;
134 }
135
136 /* Parse the output of _FDE in various ways. */
137 obj = pkg = (ACPI_OBJECT *)buf.Pointer;
138 switch (obj->Type) {
139 case ACPI_TYPE_BUFFER:
140 /*
141 * The spec says _FDE should be a buffer of five 32-bit
142 * integers. In violation of the spec, some systems use
143 * five bytes instead.
144 */
145 switch (obj->Buffer.Length) {
146 case ACPI_FDC_FDE_LEN:
147 bcopy(obj->Buffer.Pointer, fde, ACPI_FDC_FDE_LEN);
148 break;
149 case ACPI_FDC_MAXDEVS:
150 for (i = 0; i < ACPI_FDC_MAXDEVS; i++)
151 fde[i] = ((uint8_t *)obj->Buffer.Pointer)[i];
152 break;
153 default:
154 device_printf(dev, "_FDE wrong length: %d\n",
155 obj->Buffer.Length);
156 error = ENXIO;
157 goto out_hintsprobe;
158 }
159 break;
160 case ACPI_TYPE_PACKAGE:
161 /*
162 * In violation of the spec, systems including the ASUS
163 * K8V return a package of five integers instead of a
164 * buffer of five 32-bit integers.
165 */
166 fde_count = min(ACPI_FDC_MAXDEVS, pkg->Package.Count);
167 for (i = 0; i < fde_count; i++) {
168 obj = &pkg->Package.Elements[i];
169 if (obj->Type == ACPI_TYPE_INTEGER)
170 fde[i] = (uint32_t)obj->Integer.Value;
171 }
172 break;
173 default:
174 device_printf(dev, "invalid _FDE type %d\n", obj->Type);
175 error = ENXIO;
176 goto out_hintsprobe;
177 }
178
179 /* Add fd child devices as specified. */
180 error = fdc_acpi_probe_children(bus, dev, fde);
181
182out_hintsprobe:
183 /*
184 * If there was a problem with the _FDE drive enumeration, fall
185 * back to the hints-based probe.
186 */
187 if (error)
188 error = fdc_hints_probe(dev);
189
190out:
191 if (buf.Pointer)
192 free(buf.Pointer, M_TEMP);
193 if (error != 0)
194 fdc_release_resources(sc);
195
196 return (error);
197}
198
199static int
200fdc_acpi_probe_children(device_t bus, device_t dev, void *fde)
201{
202 struct fdc_walk_ctx *ctx;
203 devclass_t fd_dc;
204 int i;
205
206 /* Setup the context and walk all child devices. */
207 ctx = malloc(sizeof(struct fdc_walk_ctx), M_TEMP, M_NOWAIT);
208 if (ctx == NULL) {
209 device_printf(dev, "no memory for walking children\n");
210 return (ENOMEM);
211 }
212 bcopy(fde, ctx->fd_present, sizeof(ctx->fd_present));
213 ctx->index = 0;
214 ctx->dev = dev;
215 ctx->acpi_dev = bus;
216 ACPI_SCAN_CHILDREN(ctx->acpi_dev, dev, 1, fdc_acpi_probe_child,
217 ctx);
218
219 /* Add any devices not represented by an AML Device handle/node. */
220 fd_dc = devclass_find("fd");
221 for (i = 0; i < ACPI_FDC_MAXDEVS; i++)
222 if (ctx->fd_present[i] == ACPI_FD_PRESENT &&
223 devclass_get_device(fd_dc, i) == NULL) {
224 if (fdc_add_child(dev, "fd", i) == NULL)
225 device_printf(dev, "fd add failed\n");
226 }
227 free(ctx, M_TEMP);
228
229 /* Attach any children found during the probe. */
230 return (bus_generic_attach(dev));
231}
232
233static ACPI_STATUS
234fdc_acpi_probe_child(ACPI_HANDLE h, device_t *dev, int level, void *arg)
235{
236 struct fdc_walk_ctx *ctx;
237 device_t child, old_child;
238 ACPI_BUFFER buf;
239 ACPI_OBJECT *pkg, *obj;
240 ACPI_STATUS status;
241
242 ctx = (struct fdc_walk_ctx *)arg;
243 buf.Pointer = NULL;
244
245 /*
246 * The first four ints are booleans that indicate whether fd0-3 are
247 * present or not. The last is for a tape device, which we don't
248 * bother supporting for now.
249 */
250 if (ctx->index > 3)
251 return (AE_OK);
252
253 /* This device is not present, move on to the next. */
254 if (ctx->fd_present[ctx->index] != ACPI_FD_PRESENT)
255 goto out;
256
257 /* Create a device for the child with the given index. */
258 child = fdc_add_child(ctx->dev, "fd", ctx->index);
259 if (child == NULL)
260 goto out;
261 old_child = *dev;
262 *dev = child;
263
264 /* Get temporary buffer for _FDI probe. */
265 buf.Length = ACPI_FDC_BUFLEN;
266 buf.Pointer = malloc(buf.Length, M_TEMP, M_NOWAIT | M_ZERO);
267 if (buf.Pointer == NULL)
268 goto out;
269
270 /*
271 * Evaluate _FDI to get drive type to pass to the child. We use the
272 * old child here since it has a valid ACPI_HANDLE since it is a
273 * child of acpi. A better way to implement this would be to make fdc
274 * support the ACPI handle ivar for its children.
275 */
276 status = ACPI_EVALUATE_OBJECT(ctx->acpi_dev, old_child, "_FDI", NULL,
277 &buf);
278 if (ACPI_FAILURE(status)) {
279 if (status != AE_NOT_FOUND)
280 device_printf(ctx->dev, "_FDI failed - %#x\n", status);
281 goto out;
282 }
283 pkg = (ACPI_OBJECT *)buf.Pointer;
284 if (!ACPI_PKG_VALID(pkg, 16)) {
285 device_printf(ctx->dev, "invalid _FDI package\n");
286 goto out;
287 }
288 obj = &pkg->Package.Elements[1];
289 if (obj == NULL || obj->Type != ACPI_TYPE_INTEGER) {
290 device_printf(ctx->dev, "invalid type object in _FDI\n");
291 goto out;
292 }
293 fdc_set_fdtype(child, obj->Integer.Value);
294
295out:
296 ctx->index++;
297 if (buf.Pointer)
298 free(buf.Pointer, M_TEMP);
299 return (AE_OK);
300}
301
302static device_method_t fdc_acpi_methods[] = {
303 /* Device interface */
304 DEVMETHOD(device_probe, fdc_acpi_probe),
305 DEVMETHOD(device_attach, fdc_acpi_attach),
306 DEVMETHOD(device_detach, fdc_detach),
307
308 /* Bus interface */
309 DEVMETHOD(bus_print_child, fdc_print_child),
310 DEVMETHOD(bus_read_ivar, fdc_read_ivar),
311 DEVMETHOD(bus_write_ivar, fdc_write_ivar),
312
313 {0, 0}
314};
315
316static driver_t fdc_acpi_driver = {
317 "fdc",
318 fdc_acpi_methods,
319 sizeof(struct fdc_data)
320};
321
322DRIVER_MODULE(fdc, acpi, fdc_acpi_driver, fdc_devclass, 0, 0);
|